For example if the installation instructions state that a dryer is allowed 40 ft 12 2 m of total vent length with two 90 bends and the installation requires three 90 bends the total allowable vent length would be reduced by 10 ft 3 0 m from 40 ft 12 2 m to 30 ft 9 1 m.
Dryer vent tube length.
Let s start with what the irc international residential code says.
Male to female connections for use on wall vent duct.
A rule of thumb to follow is that it should have a maximum length of 25 feet.
The maximum length of a straight run of dryer duct is 35 feet with a 5 foot deduction in length for each 90º bend and half that for 45º bends based on using a 4 inch smooth metal vent with no screws protruding into the air flow.
Available in 10 and 20 foot lengths.
Extends to 18 elbow turns 90 within 4 of wall.
In addition if there is a 45 degree bend then deduct 2 5 feet from the recommended length and if there is a 90 degree bend deduct 5 feet.
However that 25 ft.
Allows for only 2 clearance between dryer and wall.
Dryer vent tube syurund aluminum air ducting for hvac ventilation dryer vent 4 inch x 8 feet flexible air duct for heating and cooling ventilation and exhaust 4 5 out of 5 stars 158.
Dryer vent duct is ideal for both gas and electric dryer application.
Dryer vent hoses that are run in a straight line from the dryer exhaust to the outdoors provide the best ventilation and reduce the likelihood of trapped lint.
They state that a straight duct be no longer than 25 feet.
When using a straight piece of flexible metal vent hose the maximum length allowed for safe ventilation is approximately 30 feet according to the appliance aid website.
These guidelines will usually provide a maximum length for ductwork venting a dryer.
This forms an air tight and easy to use air duct.
This can be a great space saver as long as the dryer and the vent are close together.
Elbow turns 90 within 4 of wall.
Length is only if it s a straight line from the dryer to the exhaust which it rarely ever is.
It is also adaptable to vertical horizontal and diagonal installations.
Most slim ducts can be adjusted from about 27 inches to about 48 inches in length.
It is constructed of heavy duty fire resistant 4 ply aluminum foil laminate that encapsulates a high density corrosion resistant wire helix.
The international residential code irc section m1502 clothes dryer exhaust guidelines states that a dryer exhaust duct should not exceed 25 feet from the dryer to the exhaust vent in the wall or roof.
Female to male connections for use on dryer vent outlet.
Constructed of heavy duty fire resistant aluminum foil laminate.